BioZelienople is a quartet from Chicago that slowly formed into a proper band out of years of 4-track sound experiments, hazy jams, and all-night drone sessions in a haunted room above an old antique shop. Matt Christensen plays bass, guitar, organ and sings. Brian Harding plays b-flat and bass clarinets, piano and guitar, and Mike Weis plays the drum kit, vibraphone and various eastern percussion (irreverently). In the fall of 2003, Zelienople became a quartet with the inclusion of guitarist Neil Jendon, an active musician in the Chicago improvised music community.
Drawing upon the drone-based music legacy of '60's American minimalism, 70's ambient rock, 80's space rock, and 90's electro-acoustic improv music, as well as a reverence for the history of psychedelic rock, the trio committed hours of songs to tape in preparation for their debut album, Pajama Avenue which was released by Loose Thread Recordings in August of 2002. The band took to the stage in earnest, sharing bills with Múm, Tristeza, Circulatory System, Eternals, and Scott Tuma.